The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 1991
Filed:
Nov. 07, 1990
Applicant:
Inventors:
Assignee:
Japan Atomic Energy Research Institute, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ; C25B / ;
U.S. Cl.
CPC ...
521 27 ; 521 30 ; 296235 ; 429206 ; 204296 ;
Abstract
A separator membrane for use in secondary alkali batteries having a non-ion selective hydrophilic group and ion exchange group said membrane having an electrical resistance which, when said membrane is heated in 12NaOH for 30 minutes at a temperature between about 20.degree. and 100.degree. C., varies from the initial value for 20.degree. C. by an amount between 10% and about 24% and the process thereof are herein disclosed.